Comments

Many thanks for sharing this plugin with the Moodle community. I noticed that the version (zip file) you provided did not specify for which version of Moodle it is intended to work. Also, I encourage folks to provide the source, tracker and documentation URLs so that those using your code can better collaborate with you on maintaining the code. For now, I am going to mark this as needing more work but once you specify the version for which the code is intended to work I can give it a test run and give you more feedback. Please do not hesitate to let me know if there is anything I can do to be supportive of your efforts. Peace - Anthony

I've looked through now. (the Friday, September 27, 2013, 4:42 PM release, i've marked this as supporting moodle 2.5, please change it if that's not correct.)
It seems the features are to allow numerical restrictions to posts, length of titles etc

No problem if you're not getting the warning, it may be a very edge case.

Thanks for the urls. We have a convention with naming repositories for moodle use with : 'moodle-{component}-{pluginname}' which would in your case be 'moodle-block_advrssfeed'. Do consider following the convention.